( (2 - 3 :3 1/3 )+7 :(3 1/12-1/8*13) )*9 (

( (2 - 3 / 3 1/3 ) + 7 / (3 1/12 - 1/8 * 13) ) * 9(1 + 4/59 / 4) = 54.
    3 1/3 = (3 * 3 + 1)/3 = 10/3.
    2 = 1 10/10 = (1 * 10 + 10)/10 = 20/10.
    3 1/12 = (3 * 12 + 1)/12 = 37/12.
    1 = 59/59.
1. 3/1 / 10/3 = (3 * 3)/(1 * 10) = 9/10.
2. 20/10 - 9/10 = 11/10.
3. 1/8 * 13 = (1 * 13)/8 = 13/8.
4. 37/12 - 13/8 = (74 - 39)/24 = 35/24.
5. 7/1 / 35/24 = (7 * 24)/(1 * 35) = 168/35 сократим на 7 = 24/5.
6. 4/59 / 4/1 = (4 * 1)/(59 * 4) = 4/236 на 4 = 1/59.
7. 59/59 + 1/59 = 60/59.
8. 9 * 60/59 = 540/59.
9. 11/10 + 24/5 = (11 + 48)/10 = 59/10.
10. 59/10 * 540/59 = 31860/590 = 54.